Display device comprising switchable anti-peeping device with light orientation layer

Abstract

A switchable anti-peeping device and a manufacturing method thereof, and a display device are provided. The switchable anti-peeping device, including a first substrate and a second substrate provided opposed to each other and a light control layer therebetween, wherein the first substrate includes a first base substrate, and a first light orientation layer and a first electrode layer which are provided on the first base substrate, and the second substrate includes a second base substrate, and a second electrode layer provided on the second base substrate, and the first light orientation layer defines an angle of emergence of light passing through the first light orientation layer, and the light control layer is capable of switching between a transparent state and a scattering state. The switchable anti-peeping device can achieve switching between a wide viewing angle and a narrow viewing angle, thereby meeting real-time requirements of people in different situations.

What is claimed is: 
     
       1. A display device, comprising a display panel, a backlight module, and a switchable anti-peeping device,
 wherein the switchable anti-peeping device comprises a first substrate and a second substrate provided opposed to each other, and a light control layer located between the first substrate and the second substrate, 
 the first substrate comprises a first base substrate, and a first light orientation layer and a first electrode layer which are provided on the first base substrate, 
 the second substrate comprises a second base substrate, and a second electrode layer provided on the second base substrate, 
 the first light orientation layer defines an angle of emergence of light passing through the first light orientation layer, and the light control layer is capable of switching between a transparent state and a scattering state, 
 the first light orientation layer comprises a plurality of first barriers, 
 a height of the first barriers limits the angle of emergence of the light passing through the first light orientation layer, and/or a distance between two adjacent first barriers limits the angle of emergence of the light passing through the first light orientation layer, 
 the first barriers are configured such that the angle of emergence of the light passing through the first light orientation layer is only limited to 60° or less, and is not greater than 60°, 
 the switchable anti-peeping device is located between the backlight module and the display panel, 
 the display panel comprises an upper substrate and a lower substrate, and the lower substrate also serves as the second base substrate of the switchable anti-peeping device, and 
 a wire grid polarizing film is provided on the lower substrate, and the wire grid polarizing film also serves as the second electrode layer of the switchable anti-peeping device. 
 
     
     
       2. The display device according to  claim 1 , wherein the first barriers are parallel to each other, the upper substrate or the lower substrate comprises a black matrix pattern, and a projection of the plurality of first barriers on the first base substrate is located within a projection of the black matrix pattern on the first base substrate.